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Absorbent dressing

a technology of absorbent dressing and wound care device, which is applied in the field of absorbent wound care device, can solve problems such as the maceration of surrounding skin

Inactive Publication Date: 2009-05-28
COLOPLAST AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ointments are not stable towards shear which may result in blocking of the dressing if the ointment is applied in large quantities which again may cause maceration of the surrounding skin.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

examples a1-a2

Preparation of Needle Punched Non-Woven Materials from Lanseal® F Fibres for Use According to the Invention

[0106]Using a modernised laboratory roller carding machine made by Joseph Co. having a working width of 0.6 metres fleeces were prepared from each 0.5 kilograms of 2.9 dtex / 38 mm and 5.6 dtex / 51 mm Lanseal® F fibres, respectively. The fleece was collected on a drum, which served as the take-up unit, by superposing / multiplying small fleeces from the collector.

[0107]It was found empirically that 24-folded single pieces of fleece would be a suitable intermediate product for preparing a non-woven having a basis weight GSM of 150 g / m2. From each 0.5 kg portion of fibres five fleece samples were prepared each having a weight of about 100 grams and a length of 1.1 metres. The fleece samples were then needled using a Vulkan type stitching machine having a working width of 1 m. The fleece was needled from both sides with 56 needle punchings on each side (112 in all). The specific weight...

examples a3

-A4

Preparation of a Needle Punched Non-Woven Materials from Lanseal® F Fibres for Use According to the Invention

[0108]In the manner described in Example 1 fleece materials were made from 160 grams and 220 grams, respectively, 5.6 dtex / 51 mm Lanseal® F fibres using a roller carding machine, and the resulting materials were then needled two times using a Vulkan type stitching machine. The specific weights, the thicknesses, the densities and the absorption according to DS / EN13726-1 and under pressure of the resulting products appear from the below Table 2.

TABLE 2ExampleA3A4Specific weight of the needle140190punched non-woven, g / m2Thickness, mm2.73.15Density, g / cm30.0520.06Needle density (# per cm2)178178AbsorptionDS / ENg / 100 cm23043of Solution13726-1g / g2723AUnderg / 100 cm22429pressureg / g2114

example a5

[0109]A part of the material from Example A4 was needled a third time on the Vulkan type stitching machine with further 56 needle punchings. The specific weight, the thickness, the density and the absorption according to DS / EN13726-1 and under pressure of the resulting product appears from the below Table 3.

TABLE 3ExampleA5Specific weight of the needle145punched non-woven, g / m2Thickness, mm2.92Density, g / cm30.05Needle density (# per cm2)267AbsorptionDS / ENg / 100 cm231of Solution13726-1g / g23AUnderg / 100 cm225pressureg / g17

Examples A6-A7

[0110]Fleece materials were formed from 1000 grams 5.6 dtex / 51 mm Lanseal® F fibres using a complete Falubaz flat card line with feeder. The final fleece was formed from 26 single fleeces. Such fleece was needled once on a Vulkan type stitching machine as described in Examples A1-A2. A part of the needled fleece was folded in two layers (Example A6) and another part was folded in four layers (Example A7). In both Examples the resulting products were needle...

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PUM

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Abstract

An absorbent wound care device comprising a layer of an absorbent material, said layer having a wound contacting surface, wherein the wound contacting surface is provided with a wound contacting layer in the form of a layer of an elastic material in the form of fibre threads forming a uniform layer of intersecting fibre threads covering at least a part of the surface of the absorbent material provides a non / low-adhesive flexible, highly absorbent wound dressing being capable of absorbing large amounts of wound exudates without giving rise to gel blocking and / or maceration, pressure marks nor leaving residues of the dressing in the wound and does not cause damage to fragile skin when removing the dressing and allows for easy access for wound exudates and slough to an absorbent layer, which ensures a fast initial absorption of an absorbing dressing.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to an absorbent wound care device comprising a layer of an absorbent material, said layer having a wound contacting surface, wherein the wound contacting surface is provided with a wound contacting layer and a method for preparing such a dressing.[0003]Exudates from chronic wounds may comprise two major components, a liquid part and typically a varying amount of a more solid / highly viscous part called slough. The slough has a high content of proteins and other high-molecular compounds and may often cause problems with regard to the absorption capacity of the dressing as the slough may deposit on the surface of an absorbent element thereby causing blocking of the access to the absorbing element and preventing the uptake of the further liquid part of the exudates. This is a highly undesired situation where the absorbency of the dressing is inhibited long before the absorption capacity of a dr...

Claims

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Application Information

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IPC IPC(8): A61F13/00B32B37/00
CPCA61F13/00008A61F13/00995A61F13/0206A61F2013/00744A61F13/069A61F2013/00238A61F2013/00719A61F13/0289A61F13/01008
Inventor TRUELSEN, JENS HOGNIELSEN, BRIAN
Owner COLOPLAST AS